My chicks are 3 1/2 weeks old and doing well. I started them on "start and grow" with grit available on the side. I stopped in a different store the other day asking about grit, one question led to another (from the store clerk to me) and she told me in no uncertain terms I don't need to offer grit - the start and grow has it included in the ingredients. The chicks seemed to like it - but I'm okay with not offering it if it is not needed. Any thoughts? This same gal also asked me "Are you getting your information off the internet???" (very accusingly). When I said "yep" she said I should use good ol' common sense. I had to laugh - nicely - and suggested she check out this site to see how many folks have been raising chickens on good ol' common sense and are happily sharing their advice! Thanks in advance!